819 lines
24 KiB
Go
819 lines
24 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"sync"
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"time"
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"github.com/gorilla/mux"
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"github.com/minio/minio/pkg/auth"
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"github.com/minio/minio/pkg/handlers"
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"github.com/minio/minio/pkg/madmin"
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)
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const (
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minioConfigTmpFormat = "config-%s.json"
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maxConfigJSONSize = 256 * 1024 // 256KiB
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)
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// Type-safe query params.
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type mgmtQueryKey string
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// Only valid query params for mgmt admin APIs.
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const (
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mgmtBucket mgmtQueryKey = "bucket"
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mgmtPrefix mgmtQueryKey = "prefix"
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mgmtLockOlderThan mgmtQueryKey = "older-than"
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mgmtClientToken mgmtQueryKey = "clientToken"
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mgmtForceStart mgmtQueryKey = "forceStart"
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)
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var (
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// This struct literal represents the Admin API version that
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// the server uses.
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adminAPIVersionInfo = madmin.AdminAPIVersionInfo{
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Version: "1",
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}
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)
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// VersionHandler - GET /minio/admin/version
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// -----------
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// Returns Administration API version
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func (a adminAPIHandlers) VersionHandler(w http.ResponseWriter, r *http.Request) {
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adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
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if adminAPIErr != ErrNone {
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writeErrorResponse(w, adminAPIErr, r.URL)
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return
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}
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jsonBytes, err := json.Marshal(adminAPIVersionInfo)
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if err != nil {
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writeErrorResponseJSON(w, ErrInternalError, r.URL)
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errorIf(err, "Failed to marshal Admin API Version to JSON.")
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return
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}
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writeSuccessResponseJSON(w, jsonBytes)
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}
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// ServiceStatusHandler - GET /minio/admin/v1/service
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// ----------
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// Returns server version and uptime.
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func (a adminAPIHandlers) ServiceStatusHandler(w http.ResponseWriter, r *http.Request) {
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adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
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if adminAPIErr != ErrNone {
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writeErrorResponseJSON(w, adminAPIErr, r.URL)
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return
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}
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// Fetch server version
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serverVersion := madmin.ServerVersion{
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Version: Version,
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CommitID: CommitID,
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}
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// Fetch uptimes from all peers. This may fail to due to lack
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// of read-quorum availability.
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uptime, err := getPeerUptimes(globalAdminPeers)
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if err != nil {
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writeErrorResponseJSON(w, toAPIErrorCode(err), r.URL)
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errorIf(err, "Possibly failed to get uptime from majority of servers.")
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return
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}
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// Create API response
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serverStatus := madmin.ServiceStatus{
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ServerVersion: serverVersion,
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Uptime: uptime,
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}
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// Marshal API response
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jsonBytes, err := json.Marshal(serverStatus)
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if err != nil {
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writeErrorResponseJSON(w, ErrInternalError, r.URL)
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errorIf(err, "Failed to marshal storage info into json.")
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return
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}
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// Reply with storage information (across nodes in a
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// distributed setup) as json.
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writeSuccessResponseJSON(w, jsonBytes)
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}
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// ServiceStopNRestartHandler - POST /minio/admin/v1/service
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// Body: {"action": <restart-action>}
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// ----------
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// Restarts/Stops minio server gracefully. In a distributed setup,
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// restarts all the servers in the cluster.
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func (a adminAPIHandlers) ServiceStopNRestartHandler(w http.ResponseWriter, r *http.Request) {
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adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
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if adminAPIErr != ErrNone {
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writeErrorResponseJSON(w, adminAPIErr, r.URL)
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return
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}
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var sa madmin.ServiceAction
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err := json.NewDecoder(r.Body).Decode(&sa)
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if err != nil {
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errorIf(err, "Error parsing body JSON")
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writeErrorResponseJSON(w, ErrRequestBodyParse, r.URL)
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return
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}
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var serviceSig serviceSignal
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switch sa.Action {
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case madmin.ServiceActionValueRestart:
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serviceSig = serviceRestart
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case madmin.ServiceActionValueStop:
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serviceSig = serviceStop
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default:
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writeErrorResponseJSON(w, ErrMalformedPOSTRequest, r.URL)
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errorIf(err, "Invalid service action received")
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return
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}
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// Reply to the client before restarting minio server.
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writeSuccessResponseHeadersOnly(w)
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sendServiceCmd(globalAdminPeers, serviceSig)
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}
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// ServerProperties holds some server information such as, version, region
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// uptime, etc..
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type ServerProperties struct {
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Uptime time.Duration `json:"uptime"`
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Version string `json:"version"`
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CommitID string `json:"commitID"`
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Region string `json:"region"`
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SQSARN []string `json:"sqsARN"`
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}
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// ServerConnStats holds transferred bytes from/to the server
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type ServerConnStats struct {
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TotalInputBytes uint64 `json:"transferred"`
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TotalOutputBytes uint64 `json:"received"`
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Throughput uint64 `json:"throughput,omitempty"`
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}
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// ServerHTTPMethodStats holds total number of HTTP operations from/to the server,
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// including the average duration the call was spent.
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type ServerHTTPMethodStats struct {
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Count uint64 `json:"count"`
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AvgDuration string `json:"avgDuration"`
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}
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// ServerHTTPStats holds all type of http operations performed to/from the server
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// including their average execution time.
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type ServerHTTPStats struct {
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TotalHEADStats ServerHTTPMethodStats `json:"totalHEADs"`
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SuccessHEADStats ServerHTTPMethodStats `json:"successHEADs"`
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TotalGETStats ServerHTTPMethodStats `json:"totalGETs"`
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SuccessGETStats ServerHTTPMethodStats `json:"successGETs"`
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TotalPUTStats ServerHTTPMethodStats `json:"totalPUTs"`
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SuccessPUTStats ServerHTTPMethodStats `json:"successPUTs"`
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TotalPOSTStats ServerHTTPMethodStats `json:"totalPOSTs"`
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SuccessPOSTStats ServerHTTPMethodStats `json:"successPOSTs"`
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TotalDELETEStats ServerHTTPMethodStats `json:"totalDELETEs"`
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SuccessDELETEStats ServerHTTPMethodStats `json:"successDELETEs"`
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}
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// ServerInfoData holds storage, connections and other
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// information of a given server.
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type ServerInfoData struct {
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StorageInfo StorageInfo `json:"storage"`
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ConnStats ServerConnStats `json:"network"`
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HTTPStats ServerHTTPStats `json:"http"`
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Properties ServerProperties `json:"server"`
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}
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// ServerInfo holds server information result of one node
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type ServerInfo struct {
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Error string `json:"error"`
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Addr string `json:"addr"`
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Data *ServerInfoData `json:"data"`
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}
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// ServerInfoHandler - GET /minio/admin/v1/info
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// ----------
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// Get server information
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func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Request) {
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// Authenticate request
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adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
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if adminAPIErr != ErrNone {
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writeErrorResponseJSON(w, adminAPIErr, r.URL)
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return
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}
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// Web service response
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reply := make([]ServerInfo, len(globalAdminPeers))
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var wg sync.WaitGroup
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// Gather server information for all nodes
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for i, p := range globalAdminPeers {
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wg.Add(1)
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// Gather information from a peer in a goroutine
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go func(idx int, peer adminPeer) {
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defer wg.Done()
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// Initialize server info at index
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reply[idx] = ServerInfo{Addr: peer.addr}
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serverInfoData, err := peer.cmdRunner.ServerInfoData()
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if err != nil {
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errorIf(err, "Unable to get server info from %s.", peer.addr)
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reply[idx].Error = err.Error()
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return
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}
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reply[idx].Data = &serverInfoData
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}(i, p)
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}
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wg.Wait()
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// Marshal API response
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jsonBytes, err := json.Marshal(reply)
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if err != nil {
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writeErrorResponseJSON(w, ErrInternalError, r.URL)
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errorIf(err, "Failed to marshal storage info into json.")
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return
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}
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// Reply with storage information (across nodes in a
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// distributed setup) as json.
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writeSuccessResponseJSON(w, jsonBytes)
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}
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// validateLockQueryParams - Validates query params for list/clear
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// locks management APIs.
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func validateLockQueryParams(vars url.Values) (string, string, time.Duration,
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APIErrorCode) {
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bucket := vars.Get(string(mgmtBucket))
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prefix := vars.Get(string(mgmtPrefix))
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olderThanStr := vars.Get(string(mgmtLockOlderThan))
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// N B empty bucket name is invalid
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if !IsValidBucketName(bucket) {
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return "", "", time.Duration(0), ErrInvalidBucketName
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}
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// empty prefix is valid.
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if !IsValidObjectPrefix(prefix) {
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return "", "", time.Duration(0), ErrInvalidObjectName
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}
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// If older-than parameter was empty then set it to 0s to list
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// all locks older than now.
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if olderThanStr == "" {
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olderThanStr = "0s"
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}
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duration, err := time.ParseDuration(olderThanStr)
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if err != nil {
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errorIf(err, "Failed to parse duration passed as query value.")
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return "", "", time.Duration(0), ErrInvalidDuration
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}
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return bucket, prefix, duration, ErrNone
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}
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// ListLocksHandler - GET /minio/admin/v1/locks?bucket=mybucket&prefix=myprefix&older-than=10s
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// - bucket is a mandatory query parameter
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// - prefix and older-than are optional query parameters
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// ---------
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// Lists locks held on a given bucket, prefix and duration it was held for.
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func (a adminAPIHandlers) ListLocksHandler(w http.ResponseWriter, r *http.Request) {
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adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
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if adminAPIErr != ErrNone {
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writeErrorResponseJSON(w, adminAPIErr, r.URL)
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return
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}
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vars := r.URL.Query()
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bucket, prefix, duration, adminAPIErr := validateLockQueryParams(vars)
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if adminAPIErr != ErrNone {
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writeErrorResponseJSON(w, adminAPIErr, r.URL)
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return
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}
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// Fetch lock information of locks matching bucket/prefix that
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// are available for longer than duration.
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volLocks, err := listPeerLocksInfo(globalAdminPeers, bucket, prefix,
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duration)
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if err != nil {
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writeErrorResponseJSON(w, ErrInternalError, r.URL)
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errorIf(err, "Failed to fetch lock information from remote nodes.")
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return
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}
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// Marshal list of locks as json.
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jsonBytes, err := json.Marshal(volLocks)
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if err != nil {
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writeErrorResponseJSON(w, ErrInternalError, r.URL)
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errorIf(err, "Failed to marshal lock information into json.")
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return
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}
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// Reply with list of locks held on bucket, matching prefix
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// held longer than duration supplied, as json.
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writeSuccessResponseJSON(w, jsonBytes)
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}
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// ClearLocksHandler - DELETE /minio/admin/v1/locks?bucket=mybucket&prefix=myprefix&duration=duration
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// - bucket is a mandatory query parameter
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// - prefix and older-than are optional query parameters
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// ---------
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// Clear locks held on a given bucket, prefix and duration it was held for.
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func (a adminAPIHandlers) ClearLocksHandler(w http.ResponseWriter, r *http.Request) {
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ctx := newContext(r, "ClearLocks")
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adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
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if adminAPIErr != ErrNone {
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writeErrorResponseJSON(w, adminAPIErr, r.URL)
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return
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}
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vars := r.URL.Query()
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bucket, prefix, duration, adminAPIErr := validateLockQueryParams(vars)
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if adminAPIErr != ErrNone {
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writeErrorResponseJSON(w, adminAPIErr, r.URL)
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return
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}
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// Fetch lock information of locks matching bucket/prefix that
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// are held for longer than duration.
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volLocks, err := listPeerLocksInfo(globalAdminPeers, bucket, prefix,
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duration)
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if err != nil {
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writeErrorResponseJSON(w, ErrInternalError, r.URL)
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errorIf(err, "Failed to fetch lock information from remote nodes.")
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return
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}
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// Marshal list of locks as json.
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jsonBytes, err := json.Marshal(volLocks)
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if err != nil {
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writeErrorResponseJSON(w, ErrInternalError, r.URL)
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errorIf(err, "Failed to marshal lock information into json.")
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return
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}
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newObjectLayerFn().ClearLocks(ctx, volLocks)
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// Reply with list of locks cleared, as json.
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writeSuccessResponseJSON(w, jsonBytes)
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}
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// extractHealInitParams - Validates params for heal init API.
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func extractHealInitParams(r *http.Request) (bucket, objPrefix string,
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hs madmin.HealOpts, clientToken string, forceStart bool,
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err APIErrorCode) {
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vars := mux.Vars(r)
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bucket = vars[string(mgmtBucket)]
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objPrefix = vars[string(mgmtPrefix)]
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if bucket == "" {
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if objPrefix != "" {
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// Bucket is required if object-prefix is given
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err = ErrHealMissingBucket
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return
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}
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} else if !IsValidBucketName(bucket) {
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err = ErrInvalidBucketName
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return
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}
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// empty prefix is valid.
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if !IsValidObjectPrefix(objPrefix) {
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err = ErrInvalidObjectName
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return
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}
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qParms := r.URL.Query()
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if len(qParms[string(mgmtClientToken)]) > 0 {
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clientToken = qParms[string(mgmtClientToken)][0]
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}
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if _, ok := qParms[string(mgmtForceStart)]; ok {
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forceStart = true
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}
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// ignore body if clientToken is provided
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if clientToken == "" {
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jerr := json.NewDecoder(r.Body).Decode(&hs)
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if jerr != nil {
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errorIf(jerr, "Error parsing body JSON")
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err = ErrRequestBodyParse
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return
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}
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}
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err = ErrNone
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return
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}
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// HealHandler - POST /minio/admin/v1/heal/
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// -----------
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// Start heal processing and return heal status items.
|
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//
|
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// On a successful heal sequence start, a unique client token is
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// returned. Subsequent requests to this endpoint providing the client
|
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// token will receive heal status records from the running heal
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// sequence.
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//
|
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// If no client token is provided, and a heal sequence is in progress
|
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// an error is returned with information about the running heal
|
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// sequence. However, if the force-start flag is provided, the server
|
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// aborts the running heal sequence and starts a new one.
|
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func (a adminAPIHandlers) HealHandler(w http.ResponseWriter, r *http.Request) {
|
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ctx := newContext(r, "Heal")
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|
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// Get object layer instance.
|
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objLayer := newObjectLayerFn()
|
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if objLayer == nil {
|
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writeErrorResponseJSON(w, ErrServerNotInitialized, r.URL)
|
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return
|
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}
|
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|
|
// Validate request signature.
|
|
adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
|
|
if adminAPIErr != ErrNone {
|
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writeErrorResponseJSON(w, adminAPIErr, r.URL)
|
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return
|
|
}
|
|
|
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// Check if this setup has an erasure coded backend.
|
|
if !globalIsXL {
|
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writeErrorResponseJSON(w, ErrHealNotImplemented, r.URL)
|
|
return
|
|
}
|
|
|
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bucket, objPrefix, hs, clientToken, forceStart, apiErr := extractHealInitParams(r)
|
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if apiErr != ErrNone {
|
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writeErrorResponseJSON(w, apiErr, r.URL)
|
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return
|
|
}
|
|
|
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type healResp struct {
|
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respBytes []byte
|
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errCode APIErrorCode
|
|
errBody string
|
|
}
|
|
|
|
// Define a closure to start sending whitespace to client
|
|
// after 10s unless a response item comes in
|
|
keepConnLive := func(w http.ResponseWriter, respCh chan healResp) {
|
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ticker := time.NewTicker(time.Second * 10)
|
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started := false
|
|
forLoop:
|
|
for {
|
|
select {
|
|
case <-ticker.C:
|
|
if !started {
|
|
// Start writing response to client
|
|
started = true
|
|
setCommonHeaders(w)
|
|
w.Header().Set("Content-Type", string(mimeJSON))
|
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// Set 200 OK status
|
|
w.WriteHeader(200)
|
|
}
|
|
// Send whitespace and keep connection open
|
|
w.Write([]byte("\n\r"))
|
|
w.(http.Flusher).Flush()
|
|
case hr := <-respCh:
|
|
switch {
|
|
case hr.errCode == ErrNone:
|
|
writeSuccessResponseJSON(w, hr.respBytes)
|
|
case hr.errBody == "":
|
|
writeErrorResponseJSON(w, hr.errCode, r.URL)
|
|
default:
|
|
writeCustomErrorResponseJSON(w, hr.errCode, hr.errBody, r.URL)
|
|
}
|
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break forLoop
|
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}
|
|
}
|
|
ticker.Stop()
|
|
}
|
|
|
|
// find number of disks in the setup
|
|
info := objLayer.StorageInfo(ctx)
|
|
numDisks := info.Backend.OfflineDisks + info.Backend.OnlineDisks
|
|
|
|
if clientToken == "" {
|
|
// Not a status request
|
|
nh := newHealSequence(bucket, objPrefix, handlers.GetSourceIP(r),
|
|
numDisks, hs, forceStart)
|
|
|
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respCh := make(chan healResp)
|
|
go func() {
|
|
respBytes, errCode, errMsg := globalAllHealState.LaunchNewHealSequence(nh)
|
|
hr := healResp{respBytes, errCode, errMsg}
|
|
respCh <- hr
|
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}()
|
|
|
|
// Due to the force-starting functionality, the Launch
|
|
// call above can take a long time - to keep the
|
|
// connection alive, we start sending whitespace
|
|
keepConnLive(w, respCh)
|
|
} else {
|
|
// Since clientToken is given, fetch heal status from running
|
|
// heal sequence.
|
|
path := bucket + "/" + objPrefix
|
|
respBytes, errCode := globalAllHealState.PopHealStatusJSON(
|
|
path, clientToken)
|
|
if errCode != ErrNone {
|
|
writeErrorResponseJSON(w, errCode, r.URL)
|
|
} else {
|
|
writeSuccessResponseJSON(w, respBytes)
|
|
}
|
|
}
|
|
}
|
|
|
|
// GetConfigHandler - GET /minio/admin/v1/config
|
|
// Get config.json of this minio setup.
|
|
func (a adminAPIHandlers) GetConfigHandler(w http.ResponseWriter, r *http.Request) {
|
|
|
|
// Validate request signature.
|
|
adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
|
|
if adminAPIErr != ErrNone {
|
|
writeErrorResponseJSON(w, adminAPIErr, r.URL)
|
|
return
|
|
}
|
|
|
|
// check if objectLayer is initialized, if not return.
|
|
if newObjectLayerFn() == nil {
|
|
writeErrorResponseJSON(w, ErrServerNotInitialized, r.URL)
|
|
return
|
|
}
|
|
|
|
// Take a read lock on minio/config.json. NB minio is a
|
|
// reserved bucket name and wouldn't conflict with normal
|
|
// object operations.
|
|
configLock := globalNSMutex.NewNSLock(minioReservedBucket, minioConfigFile)
|
|
if configLock.GetRLock(globalObjectTimeout) != nil {
|
|
writeErrorResponseJSON(w, ErrOperationTimedOut, r.URL)
|
|
return
|
|
}
|
|
defer configLock.RUnlock()
|
|
|
|
// Get config.json - in distributed mode, the configuration
|
|
// occurring on a quorum of the servers is returned.
|
|
configBytes, err := getPeerConfig(globalAdminPeers)
|
|
if err != nil {
|
|
errorIf(err, "Failed to get config from peers")
|
|
writeErrorResponseJSON(w, toAdminAPIErrCode(err), r.URL)
|
|
return
|
|
}
|
|
|
|
writeSuccessResponseJSON(w, configBytes)
|
|
}
|
|
|
|
// toAdminAPIErrCode - converts errXLWriteQuorum error to admin API
|
|
// specific error.
|
|
func toAdminAPIErrCode(err error) APIErrorCode {
|
|
switch err {
|
|
case errXLWriteQuorum:
|
|
return ErrAdminConfigNoQuorum
|
|
}
|
|
return toAPIErrorCode(err)
|
|
}
|
|
|
|
// SetConfigResult - represents detailed results of a set-config
|
|
// operation.
|
|
type nodeSummary struct {
|
|
Name string `json:"name"`
|
|
ErrSet bool `json:"errSet"`
|
|
ErrMsg string `json:"errMsg"`
|
|
}
|
|
|
|
type setConfigResult struct {
|
|
NodeResults []nodeSummary `json:"nodeResults"`
|
|
Status bool `json:"status"`
|
|
}
|
|
|
|
// writeSetConfigResponse - writes setConfigResult value as json
|
|
// depending on the status.
|
|
func writeSetConfigResponse(w http.ResponseWriter, peers adminPeers,
|
|
errs []error, status bool, reqURL *url.URL) {
|
|
|
|
var nodeResults []nodeSummary
|
|
// Build nodeResults based on error values received during
|
|
// set-config operation.
|
|
for i := range errs {
|
|
nodeResults = append(nodeResults, nodeSummary{
|
|
Name: peers[i].addr,
|
|
ErrSet: errs[i] != nil,
|
|
ErrMsg: fmt.Sprintf("%v", errs[i]),
|
|
})
|
|
|
|
}
|
|
|
|
result := setConfigResult{
|
|
Status: status,
|
|
NodeResults: nodeResults,
|
|
}
|
|
|
|
// The following elaborate json encoding is to avoid escaping
|
|
// '<', '>' in <nil>. Note: json.Encoder.Encode() adds a
|
|
// gratuitous "\n".
|
|
var resultBuf bytes.Buffer
|
|
enc := json.NewEncoder(&resultBuf)
|
|
enc.SetEscapeHTML(false)
|
|
jsonErr := enc.Encode(result)
|
|
if jsonErr != nil {
|
|
writeErrorResponseJSON(w, toAPIErrorCode(jsonErr), reqURL)
|
|
return
|
|
}
|
|
|
|
writeSuccessResponseJSON(w, resultBuf.Bytes())
|
|
return
|
|
}
|
|
|
|
// SetConfigHandler - PUT /minio/admin/v1/config
|
|
func (a adminAPIHandlers) SetConfigHandler(w http.ResponseWriter, r *http.Request) {
|
|
|
|
// Get current object layer instance.
|
|
objectAPI := newObjectLayerFn()
|
|
if objectAPI == nil {
|
|
writeErrorResponseJSON(w, ErrServerNotInitialized, r.URL)
|
|
return
|
|
}
|
|
|
|
// Validate request signature.
|
|
adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
|
|
if adminAPIErr != ErrNone {
|
|
writeErrorResponseJSON(w, adminAPIErr, r.URL)
|
|
return
|
|
}
|
|
|
|
// Read configuration bytes from request body.
|
|
configBuf := make([]byte, maxConfigJSONSize+1)
|
|
n, err := io.ReadFull(r.Body, configBuf)
|
|
if err == nil {
|
|
// More than maxConfigSize bytes were available
|
|
writeErrorResponse(w, ErrAdminConfigTooLarge, r.URL)
|
|
return
|
|
}
|
|
if err != io.ErrUnexpectedEOF {
|
|
errorIf(err, "Failed to read config from request body.")
|
|
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
|
|
return
|
|
}
|
|
|
|
configBytes := configBuf[:n]
|
|
|
|
// Validate JSON provided in the request body: check the
|
|
// client has not sent JSON objects with duplicate keys.
|
|
if err = checkDupJSONKeys(string(configBytes)); err != nil {
|
|
errorIf(err, "config contains duplicate JSON entries.")
|
|
writeErrorResponse(w, ErrAdminConfigBadJSON, r.URL)
|
|
return
|
|
}
|
|
|
|
var config serverConfig
|
|
err = json.Unmarshal(configBytes, &config)
|
|
if err != nil {
|
|
errorIf(err, "Failed to unmarshal JSON configuration", err)
|
|
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
|
|
return
|
|
}
|
|
|
|
// If credentials for the server are provided via environment,
|
|
// then credentials in the provided configuration must match.
|
|
if globalIsEnvCreds {
|
|
creds := globalServerConfig.GetCredential()
|
|
if config.Credential.AccessKey != creds.AccessKey ||
|
|
config.Credential.SecretKey != creds.SecretKey {
|
|
writeErrorResponseJSON(w, ErrAdminCredentialsMismatch, r.URL)
|
|
return
|
|
}
|
|
}
|
|
|
|
// Write config received from request onto a temporary file on
|
|
// all nodes.
|
|
tmpFileName := fmt.Sprintf(minioConfigTmpFormat, mustGetUUID())
|
|
errs := writeTmpConfigPeers(globalAdminPeers, tmpFileName, configBytes)
|
|
|
|
// Check if the operation succeeded in quorum or more nodes.
|
|
rErr := reduceWriteQuorumErrs(errs, nil, len(globalAdminPeers)/2+1)
|
|
if rErr != nil {
|
|
writeSetConfigResponse(w, globalAdminPeers, errs, false, r.URL)
|
|
return
|
|
}
|
|
|
|
// Take a lock on minio/config.json. NB minio is a reserved
|
|
// bucket name and wouldn't conflict with normal object
|
|
// operations.
|
|
configLock := globalNSMutex.NewNSLock(minioReservedBucket, minioConfigFile)
|
|
if configLock.GetLock(globalObjectTimeout) != nil {
|
|
writeErrorResponseJSON(w, ErrOperationTimedOut, r.URL)
|
|
return
|
|
}
|
|
defer configLock.Unlock()
|
|
|
|
// Rename the temporary config file to config.json
|
|
errs = commitConfigPeers(globalAdminPeers, tmpFileName)
|
|
rErr = reduceWriteQuorumErrs(errs, nil, len(globalAdminPeers)/2+1)
|
|
if rErr != nil {
|
|
writeSetConfigResponse(w, globalAdminPeers, errs, false, r.URL)
|
|
return
|
|
}
|
|
|
|
// serverMux (cmd/server-mux.go) implements graceful shutdown,
|
|
// where all listeners are closed and process restart/shutdown
|
|
// happens after 5s or completion of all ongoing http
|
|
// requests, whichever is earlier.
|
|
writeSetConfigResponse(w, globalAdminPeers, errs, true, r.URL)
|
|
|
|
// Restart all node for the modified config to take effect.
|
|
sendServiceCmd(globalAdminPeers, serviceRestart)
|
|
}
|
|
|
|
// ConfigCredsHandler - POST /minio/admin/v1/config/credential
|
|
// ----------
|
|
// Update credentials in a minio server. In a distributed setup,
|
|
// update all the servers in the cluster.
|
|
func (a adminAPIHandlers) UpdateCredentialsHandler(w http.ResponseWriter,
|
|
r *http.Request) {
|
|
|
|
// Authenticate request
|
|
adminAPIErr := checkAdminRequestAuthType(r, globalServerConfig.GetRegion())
|
|
if adminAPIErr != ErrNone {
|
|
writeErrorResponse(w, adminAPIErr, r.URL)
|
|
return
|
|
}
|
|
|
|
// Avoid setting new credentials when they are already passed
|
|
// by the environment.
|
|
if globalIsEnvCreds {
|
|
writeErrorResponse(w, ErrMethodNotAllowed, r.URL)
|
|
return
|
|
}
|
|
|
|
// Decode request body
|
|
var req madmin.SetCredsReq
|
|
err := json.NewDecoder(r.Body).Decode(&req)
|
|
if err != nil {
|
|
errorIf(err, "Error parsing body JSON")
|
|
writeErrorResponseJSON(w, ErrRequestBodyParse, r.URL)
|
|
return
|
|
}
|
|
|
|
creds, err := auth.CreateCredentials(req.AccessKey, req.SecretKey)
|
|
if err != nil {
|
|
writeErrorResponse(w, toAPIErrorCode(err), r.URL)
|
|
return
|
|
}
|
|
|
|
// Take a lock on minio/config.json. Prevents concurrent
|
|
// config file updates.
|
|
configLock := globalNSMutex.NewNSLock(minioReservedBucket, minioConfigFile)
|
|
if configLock.GetLock(globalObjectTimeout) != nil {
|
|
writeErrorResponseJSON(w, ErrOperationTimedOut, r.URL)
|
|
return
|
|
}
|
|
defer configLock.Unlock()
|
|
|
|
// Acquire lock before updating global configuration.
|
|
globalServerConfigMu.Lock()
|
|
defer globalServerConfigMu.Unlock()
|
|
|
|
// Notify all other Minio peers to update credentials
|
|
updateErrs := updateCredsOnPeers(creds)
|
|
for peer, err := range updateErrs {
|
|
errorIf(err, "Unable to update credentials on peer %s.", peer)
|
|
}
|
|
|
|
// Update local credentials in memory.
|
|
globalServerConfig.SetCredential(creds)
|
|
if err = globalServerConfig.Save(); err != nil {
|
|
writeErrorResponse(w, ErrInternalError, r.URL)
|
|
return
|
|
}
|
|
|
|
// At this stage, the operation is successful, return 200 OK
|
|
w.WriteHeader(http.StatusOK)
|
|
}
|